This website hosts latest version of MedDRA in English, French, and German. The dictionary is presented in an interactive tree format.
Open the "Classes" tab, type the keyword (for example, "skin" or name of the condition) and start exploring.
Here is an example for "headache".

We selected "Headaches NEC".

Here is the "Visualization" tab.

Click "Screenshot" on the right to download a screenshot of the full path (it's not scaled properly for laptop screens).
